An 860-km pipeline recently began supplying natural gas produced by the Changqing Oilfield to Beijing. Passing through Shaanxi, Shanxi and Hebei provinces, the pipeline crosses 230 rivers, 21...
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An 860-km pipeline recently began supplying natural gas produced by the Changqing Oilfield to Beijing. Passing through Shaanxi, Shanxi and Hebei provinces, the pipeline crosses 230 rivers, 21...